Weaving loom



June 1930. 1 M. c. H. o. LEcocQ 1,760,948

- wEAvING LooM v Filed oct, 1,V 1928 s sheets-smeet 1 June 3, 1930. MIc. H. o. I Ecoco WEAVING LOOM Filed oct. 1, 1928 :s sheets-Sheet 2 .0.LECOCQ.

Afr nf/S June 3, 1930. M. c. H. o. L EcocQ 1,760,948

wEAvING LOOM v Filed 011:1',` l, 1928 5 Sheets-Sheet 5Mnir'ngrtini,.'cfnnnnns.nennioCTevnabscess;` oneniannhi, ErannonV i'vvrEnviar@geen f appnarionmea oqrobejri, 19225 'serial No. wasmand m*geiguiecrqbefa 1927*. y

e The present invention hasvfor its `object mechanical arrangements vwhich allomlfi-n' 'Weaving-looms, a spent shuttle tohe :removed'andvto'gbe replaced by :another without Y the speedofthe loombeing.slacker-led andv With.

normal Y y .avoiding the Ygrave danger Lof the projection Y of ashuttlev outside Yoffand in front Iof the 1 out-any troubleVbeing.caused tothe :functioning oi'ithelooni.' 1 y Y Ithasvpreviouslybeen pr posedwto eect the automatic changing of ftheshuttle, f andr :for this ,purposethe rear Wall .of the shuttle boX .hasbeen-pivoted-and adapted toberef A leased strom 4 adetena ontthe Wettailingjor the shuttle pirn l'becoming substantially .eX-'Q hausted, @by.the Wet-forkfor, yWet-eelfe-r, isok that it can be swung inwards byaspring,

,across lthe path of the shuttle, land the spent Y shuttle; diverted"and ej ected rfroiny thearnachine at ia subsequent pick; Theben-,front.is then 4raised Vand fresh lshuttlegenters the' shuttle The resentinvention relates-to 'automatic p Y Y shuttlelohanging apparatus'lo theabove type n and its .main objects ,arerf to v.ensmre theA seem-Q ity Aof the flocking device, tol increase the 'ref lj abilityy of :theshuttle-changing operation, 4'to A, `render thelwalls ofthe shuttl'eboi;'quitelrigi'd during the norinalfoperation ofthe loomya'nd: to Vavoid4any damage ato :'the'gnieohanisni, even ivf-the :fitting .of thislniechanisni 'or ,the looin is fbad': The ,invention is essentially.characterized lby @the Vback; of the shuttle box being rinly Jnaintainediny itsnorinal position,fin

-on the breastbearn'ofitheloointhen lightly pushes `back @the Ybox-Eback, just l enough. to.v allow the tooth ofthe/detent'tobedise-ngaged Y n Y beanioftheloom, V2 isthel movabl'elay,supported Aby its tivoloscil-lating levers or swords 385 and is the reedixledlto thelay'.l

l'roni:itsgroove.v At thisamoinent a ln'eniber Ysituatedion,the layitselfcanjrelease the deltent, transmitting tout; by -nicans `ofrafiieX-ible intermediate nuernberg @an n'npulse produced norcanany.untimelylinlolcliing be produced.

-, h'oreover, :atalter'i1ater beats of thefloom5lvvlifen "shuttle i`s..againcharacterized bythe locking l oatheffront part ofthe shuttlel boxenthe hach: part In order .to keep' l1t .rigidlyloivered ffloy another?doc-king lin order to .retain this I"iont part in a `raised'positionduring the introductionfof' a 'nevv`shuttle.l-:The invention' ist againeli-'aracterized' @by 4various arrangements :for safety' lor!`improvement', v avoiding "any dama-geit@ the members, keven in .ease offbald ttingof the loonnand all'owingthe niee'hanifsinto .be adapted to:anylooin' 'fvvithj-l fand itsittingin anyway; o, v Y. Inorder that theinventi'onniay be`v more clearly understood itWill new Lhedescribed 'ifAwvithgreference to thegaecompanying drawothelayandy comprises-thefollowing vine'inff A f ybers: aibaseiplatej(,Whereinthe grooi'esf'ofvthe ,shuttle-driving: picker fis formed), aback .part o-f the shuttlefboif 7? (shown partly yin section inllig.1l)k Whichjsjfpivoted to/ thisplatefbya -piwt ,82jv ai'bogiffront 9 connected 1106 Ytheishirttlefbonialready .contains jan shuttle; the

releasing o ythe .detent is absolutelyl prevent- I ed'fbya' cam orjamember of tl'ielooin', which v looin. The arrangement for changing theduring .the normaleperation of the loom, and f uthavingto varyitscharacteristies,v its speed ings YWhich show' an automaticlshuttle-ch'angingrinechanisni adapted to a; Weaving loonrfY ,with Vafast reedrand? underthe ,control of `the Wett-forl or iceeler.

. lligure'll is :a plan view of thedevice;V Y

,Figure'-isaisectionalyievv along-the line spiteof the actinof.alspringr whichv tends inlllig'urel.y f f' 'to :open-it by 3ivoting,b`ya detentwhiohmay l .,enlyfbe vvreleased during la very short jperiodf`l.offeatli,cycle, when therlay' isfinthe forward or beating uppositionybecansea stoplixed shuttle box isziixed on-oneof the endsofvv ycri- Se A

iFigures3,4,Y 5 andi represent respectively, y e n. azslightly[largerscale, theisectional views. g jalon; thelines Ba, -C-C, Deel),`of Figk by two arms 10, a crosspiece 11 (sectional in Fig. 1) and twosupports 12 to a rotatable shaft 13 in two parts carried by two supports14 and 15 rigid with the base plate. A spring (herea helical spring 16workingv by torsion around the pivot 8, see Fig. 6) vtends to move theback of the box and make it occupy the inclined position shown by brokenlines in Fig. 1, in the'normal operation, the back of the box is kept inits normal position by a tailV piece 18 (Fig.- 3) the end of whichengages with a detent 19 fixed to the lay, or preferably to the baseplate 5. This detent 19 is itself, Vby means of its spur 20, under theactionvof a flexible lever 21 pivoted. on the change shaft "22 lfixedbehind the lay and extending the en- At .the other extire length of thereed. tremity of the reed the change shaft 22 carries 2) another lever23 which can be struck, in order to turnit a little, by a small bar 24added to the usual weft fork 25 of the l loom., This fork 25 isarticulated at the end of a. support 26 rigidly fixed to the breastbeam 1. i Y

V The back of the box is pushed back into the normal position every timethe lay approaches the breast beam (Fig. 3), by an abutment 2'? placedat the extremity of a forwardly proljecting push rod 28 carried by theextremityV y ofthe pivoted box-back.

extended at 29 towardsV the end of the'lay and This box-back is on theother side of the pivot 8, and the'member29, (Figs. land 6), during theopeningl by pivoting, engages, by meansy of a small 'rod 30, with a spurfixed to the support l2 of Vthe box-front.

rThe opening of the box-back thus provokes the lifting of the box-frontup -tothe position represented in broken lines in Figs. 4, 5 and 6.' Thesmall rod 30 pushes the spur by means of the forked end, (Fig. 6) butdoes not draw it back.

` Vhen the box-front is raised, it locks itself i in a high position(Fig. 4) due to a detent 31,

Y `detent 31. 'A and again locksitself, 1n the normal position,

` .iember 9 by a iiexible strip (Fig.. 3).

l. S with it. VSt

carried by the support 15, which engages with the supporting member 32fixed to the box-front. The unlocking of lthe box front is effected bythe abutment33secured to the box-lock when the latter returns to itsnormal position. by striking the tail piece 34 of the The box-'frontthen falls again,

' move from the position shown in full lines to that shown in brokenlines. This raised v transfer lever 38, moving with the lay towards thebreast beam of the loom, engages on appreaching the breast beam with thelever 4l of a supply magazine carried by the breast beam of the loom andmoves it from its former position before Contact with the approachingtransfer lever, position shown in full lines,

to that shown in dotted lines. The supply magazine essentiallycomprises, on a base plate 42 (Figs. 1 and 4), a shuttle chamber 43, thebottom of which can be swept by a push bar 44, operated by means of thespur 45 of the charging lever 41, and-the lever 41 so rolls on a curvedsupporting surface 46 that when the end contacting with the roller movestowards the left as shown by the position in dotted lines in Fig. 1, theother end carrying the spur moves to the right and with it the push bar44 and the new shuttle to be used. The curvature of the sup` portingsurface 46'is suchv that the push bar imparts to the shuttle a uniformor slightly accelerated movement, and not a movement.

decreasing in speed as that of the lay. This prevents the new shuttlebeing pushed forward by the push bar from moving quicker than the saidpush bar and tilting over, as would be the case if the movement of thepush bar was proportionate to that of the lay,

V-whe-n, atthedecrease in speed, the shuttle,

not being retained, could run in advance thereof.

VIt is necessary again to point out, before explaining the operation ofthe apparatus,

that the interiorY of the box-baci; contains Fig. 1 the brakinor tonOueor swell 47 d l1 D usually existing on weaving looms with a fastV reed,and on which the shuttle coming into the box acts. This swell is pivotedon the lpivot 48 fixed to the box-back and, by means of its tail piece49which here extends through the lay (see Fig. 5) acts in the knownmanner onthe lever 50 fixed tothe stop rod and the tongue for stoppingthe loom. The unusual position of the pivot 48, oscillatingtowards theexterior, and of the lever'50, transported towards the end of the loom,will be noticed. A'seeond braking tongue 51, specially for the ejection,is also pivoted on the pivot 48 and is returned by an independentspring, (not shown), against a xed or movable stop 52 on the end of thelay: this tongue can act equally through its tail piece 52 on the lever5() andthe tongue for stopping the loom.

rlhe other members or details will be mentioned in the course of theexplanation of the operation of the apparatus. v

When the weaving loom is running in a normal manner with a full shuttle,all the members occupy the positions represented by full lines. Thebackof theshuttle box-,is firmly retained by its detent 19 (Fig. 3), whichengages, as will be noticed, with a backwardly inclined tooth, formed onthe member 18. At each beat up or pick in the forward position of thelay, the abutment 27 of the box-back engages with the breast beam andAmalres the end otY the box-back move .semewhat backwards on' the lay.(two mil.-y

imetres: for example), so that at this ,moment (position in broken linesto the 'right in Fig. the tooth of the detent 19`Wouldl beA normalposition is sh'ownin brolren lines in,

Fig-2. When the shuttlev arriving inthe box opposite, hasfleft behinditselfta liber or` wett thread 53 interposed between reed 4 andl .theprongs y 25 of the fork, this weft thread, causes the weft fork toliftin'the wellknown lmanner so that the small'` bar24:` 7 1 passesunderneath tne mouth of the lever'2-3,

without strikingthe latter. l The following beat up or pick, when theshuttle is in the box already deseribedand when there cannotbe any fweftthreardbetween the reed and the prongsjot the weftforlr, it is necessaryto prevent the impact of the bar 24 on the lever 23. This is `eltectedby'raising the tailpiece of the weft fork by means of the. roller 5&1,mounted on the ixed pivot 55, and controlled` by the'leve'r 56.'. Thislever receives .its movementfroin a cam (not shown) mounted on the usualshaftv wiper shaft) which, on allloorns, turns at-halfspeed, camregulatedv foi-thus lifting the roller, one turn out ot two turns, whenthe lay is torwardorbeating up. For this purpose can be used' thealready existing cam which operates the hammer of the fork. As long asthegloorn then functions normally, thev shuttle enters into the boxalready d'es'cribedjwhere it acts as already explainedV on the swellZand consequently onthe Vlever 50. Then it is' prof jected againnormally by the usual shuttle drivingpiclrer 57 lot the loom.

The failing of the weft thread 53 setsthe mechanism into operation.Thesrnall bar24 then strikes the lever 23which it carries along a.little (for 5 millimetres for example) and thus rotates the changeshat`t22. With this shaft Vturns the flexible lever 21. The latterpresses on the spur 20r-ixedlaterally to the detent 19. At tirst thelatter is strong@ ly engaged byitstooth in the groove in the tail piece18 of the box-back. The lever 21 has not enough torce to lower it andcan only bend itseltl against this resistance. f. Vhen the lay,continuing its orwardmotion, releases the detent 19 from its groove, aspreviously explained, the bent lever215lowers the detent 19. On thefollowing withdrawal-lot the lay, the detent 19, still held downward,allows the loom would 0n, beingI moved, the tail piece '28 of thebox-back commences to disengagethestaple ot the catch 35 ofthebox-'fronn' andre? Vleases vthe same.

Then the small rod30oper-V ates the box-ro'nt,as already stated, andlitt-s it. The box-'front ytakes the position represented by the brokenlines ot Figs; 4,5

and 6, and l'o'cls'itself inthe hi'frh position the box-back? to bedeflected smoothlyunderv the actionr ot its spring 16, since thedetentQ-l remains in Contact with .the breas'tblearntill the box-backhas been completely*detleetedl through the detent fr31,`as hasalreadybeen explained. Likewise, thecam 37 raises the transfer lever"38to the horlzonal position.

All these movements are produced when 'the y abutment 27 leaves thebreast bea1n,:thatis to say, about after the lirstuhalf-course back-Vward of the lay.

, Then, when the spent shuttle is thrown to# wardsthe box, it finds thebox-back moved.

vlt engages, 0n slanting a little, behindthe rear surface. of thismember, between the latter and the brakingtongue 51. it acts on thisvtongue as on an ordinary braking swell, pushing its backwardawhichthusalso moves the lever 50. yThe ejected shuttle re-v mains atlirstthus .tightened in betweenfthe Vback ofthe box A,7 and the tongue 51,being also supported in part bythe baseplate 5.'

la A ltthe ejected shuttle were stopped yin its l Y I course, in `frontofthe lay-sWordS forexample, the lever 50 would not bey moved, and

tongue.

' T he lay returning in' the lforward direction,

the groove of theroller lOthen operates the spring, andoperate the pushbar 411-. The lat`` ter engages with the bottom'shuttle of kthe sul lmagazine and "irol'ects it fomvardy I be be' stopped by its stopping .Y`V

whilstthelay advances.` The shuttle vpassesr under the upliftedbox7ront(Fig. 5).

the saine time, theabutment'2? has again. Yenrtek gagetl-witlrtliebreast beam, .and the back of the box 1s `restored to the normalposition. At`V J the end ot the .forward.movement ofthe lay, Y

into: its box by lthe replaced. box-bacliis loclredfagain by 19,

the shuttle is ullypres, means 'of the 'push bar; leased bythe abutmentthe bo'x-fhont,jre

again -alls and Y closes inthe new shuttle ontalling again it is lockedby 35i and 36.l The ejected shuttle has been pushed back by the back ofthe box ofi' the base plate The `laralring tongue 51, Y pivotedbackwardsl with the boxfba'clr, has f again engaged'vvith` itsaforesaid; lixedv stopr 52 on the lay; (ThisV movement hasbeenvregulated and the stop 52 ohosenso tha-t'this move ment increases,the distance which separates the back of the box-'back from thetongnefflsov that all pressure on the ejected sl'ruttle removed; thelatter, nolonger having a- 'supportor brake,.1vfalls andolearsthisspaee'.- "(l-t falls into the normal position. All is readyVfor a further operation.

In Fig. 6, represented by 5S, is a movable abutment for assuring thatthe ejected shut-- tle is released .when the box-back is pushed backinto its normal position. rllhis abutment 58 is pivoted at 59 on theexterior support 14, and a spring tends to lower it into the. positionshown in broken lines. By means of its arm 60, this abutment is liftedby the cam 3i' in the normal position (thicli lines). During thecharging operation, the deviated cam 87 allows the abutment 58 to belowered on to and suppor ed by the working extremity of the vbrakingtongue 5l. The latter, on being pushed back by the ejected shuttle,allows the abutment 58 to drop o slightly again so as to loclr theVtongue 5l (position in brolren lines) by means of its front notch. lNhenthe tongue 5l is then de- 4tlected backwards with the box-back, its

working-end cannot return towards the stop 52 and the pressure on theejected shuttle is thus removed and the latter then able to fall. Then,the cam 37, on moving again, raises the arm and thereby the movableabut-ment 58, and thus allows the tongue 5l to return to its stop 52 inorder to be ready to brake another ejected shuttle. Y l

.The mechanism can, if desired, be accompanied by various arrangementsof improvement and safety.

ln order to retain'at the bottom of the supply magazine the first newshuttle to be introduced without itV being released, two

catches 6l, mounted at the end of the two flat bars G2 which are pivotedon a pivot (23 on the base plate underneath the push bar, are used,(Figs. l and 4). A spring tends to lift each bar 62 with the catches 6l.When the push bar advances before engaging with the new shuttle, itcommences by passing over small ramps 64 carried by each flat bar; thismovement causes the bars to be lowered and disengages the catches 6lfrom the shuttle; the push bar then engages with the shuttle. The resultof this is that if such an untimely charging was made, the shuttlealready ejected from the supply magazine would be able to re-enter it,pushed back by the box-front, by passing over the catches 6l. ln thiscase, it is necessary that the push bar 44 may be able to withdraw inspite of the edort of the roller 40 on the lever 41. To this end, thelever 4l is broken at 65 by an articulated joint with an abutment 66,which a spring (not shown) A mally against it.

tends to render rigid, but which, nevertheless, is capable of yieldingin case of any excessive effort. In the same way, inorder to allow there-entry into the bottom of the magazine of such an ejected shuttle, itis necessary to prevent the descent of an upj er shuttle on to the pushbar. To this end, w1 en the push'bar advances, a ramp G7, which itcarries, engages with the rollers 68 of one or two levers flex.: iblypivoted at 69; these apply stops 70 to the upper shuttle, which form abrake on this shuttle, and retain it in the suspended position until thepush bar has returned to its waiting position; then only can vtheliberated shuttle fall to the bottom of the magazine, if this place isfree.

Fig. Y represents an arrangement for allowing the shuttle-driving picker57 to return to the end of the lay to facilitate the introduction of anewV shuttle. This picker is usually stopped before the end of itscourse by a. resistance (check strap or spring) which generally pushesbaclithe shuttle coming norln order to bring back the piclrer itselfduring the changing of a shuttle, the movement ofthe ejected shuttle isused in the following manner. The resistance which retains the picker isyjoined to a bentflever pivot-ed at 7l, of which the long arm 7 2 comesbehind the picker 57, and of which the short arm 73 can be moved by thebraking tongue 5l; a spring 74 (or a check strap) tends to return thebent lever to the position represented in full lines. In normaloperation,

nothing whatever opposes the free move.

ment of this bent lever. 'llhem however, a shuttle is ejected, thedeflected tongue 5l presses against the arm 73 of the lever, andreleases the picker. The ejected shuttle, on stoppinfy against a stop 75 on the arm 7 2, also helps this movement.

The picker can also be brought back, if it has stopped in operation, bypushing it by its `lower part underneath the base plate (Figs. l and bymeans of a lever 7G mounted on a pivot 77 fixed to the lay. Anotherlever with a grooved roller 78 abuts against, when necessary, anoscillating plate 7 9 iiXed to the supply magazine, lever 7 8 beingpivoted and adapted to move the lever 7 6 with it (by means of aflexible intermediate member for avoiding damage) a spring then returnsthe whole toits normal position, removing the lever 76 from beneath thegroove 6 of the driving picker. The oscillating plate 79 is controlledby the swinging charging lever 4l; in the normal position, it is not onthe path of the grooved roller 78,'but when the swinging lever isdisplaced for effecting a charge, it causes plate 79 to oscillate (seeFig. 5), and puts it into a suitable position to cause the levers 78 and76 to be pivoted.

ln Fig. l, in section, and in front of the lay sword 3, and in Fig. 4,is to be seen a tongue 8O which is also mounted on the pivot 48.

This tongue 'crosses the rear `wall ofthe-box; back nearfits end; VVhenJthis box vback vmoves forwards, the v tongue 80, pushed by fa spring81,' projects slightly. Thelfejected shuttle at first engages with thisspringpressed tongue which yields and kdem-:lens the impact, helping theejected shuttleto Arnove into its oblique direction towards theejectingbox without any jolt.- v in the case when the chargingof a'lshuttle iscont-rolled by theweft =ork,the-la'yjbeats up once, twice or' threetimes, without any wett thread being inserted in the fabric, the qualityofthe latter suffering therefrom, To avoid this defect, the movement ofthefabric, by means of the ordinary takeupor regulator,isv stoppedduringone, two or-three picks, as judged best.v For this purpose, thearrangement represented by VFig. 8 is used.

' rest upon Ethe VCounts'fr-pavid,

The counter-pawl of 'the regulatorcan Ibe' lifted by Vmeans of 'anintermediate member (not represented) employing the 'motion of' themagazine lever or 'tliefpush bar. It 1sv known that-'the advancement ofthe fabricis i produced by the alternative 'moveinentrfof` a pawl 82,which participates in the movement of the lay, in order to rotate aratchet Wheel,

the reverse rotation `of which -is prevented by a counter-pawl 83.Suspended from the pivot 8401i the counter-paw'l'83, isa partiallypolygonal member `having smallfpro jections at its points, preferablyrollers such as 8G, 87, 88.-llormally', the counter-pawl and thesuspended member occupy the position representedin brolren lines. "When1a shuttle-charging operation is eiected,`tne mechanism liftsthefcountenpawhzso that the member 85, moved by'its weight or aspring,

swings inthe direction of the arrown until it occupes the vpositionrepresented-by thick lines and then againfalls on the pawl: the

counter-pawl is thus retained in the air.'v The pawl 82, however,still'eXecutes its to and fro movements. It carriesa projection such 89adapted to'engage with the projections rollers 86, 87,88 and to vmovethem Aalong in one direc-tion (to th-e lett in the igure).

but not in the other. The rst ysemi-'oscillation to the lettpushes tothe position of 86, but the following one towards Vthe right does notbrin "it back becausethe inclined' member 89 slides underneathr therollers 87 and 88 rest-ing on the pawl through Vthe weight of'the'vcount'er-.pa'wl -At the following-beat of the loom, the roller 88is, -in its turn, pushed to the l eift, so` that the 'member 85, noVlonger having suicient-support, sv'vings in the direction of the" arrowY) and allows Vthe counter-pand y83 to return in gear. By,

raising the number lof projectionsor rollers,

the counter-pawl can-be kept raised during more than two beats, asdesired. The -member85, or a vsimilarmember, can'allternatively besuspended `from the mov'g'iblel 'pawl `and It is well vunderstoodthatmany's'ubstantial Variations .mayy be applied to the invention. 1

For example, thechange shaft 22'.betwccntheV weft fork and principalrdetent can occupy any other position on the lay; the box-back canbeiittcd'with any 'other -kindoi'springg the steps can -occupy` otherVvpcsitions; the

pivotal pointsof thetwo braking tonguesv can be independent: thecharging lever can be controlled directly'bytheboxback etc. Y

llt ris not necessarythat ythe "lever should 'fbe arranged towards theend of the lay.- lt'canbe allowed to take its usual posi-` tion near thelay sword, without theejecting tongue 51 having to be` altered; itisgonly' necessary forthis to transmit' the movement oia point of theend ofzthis tongue 'as-far as lthe lever 50, 'by' means of anothersuitable levenv lt is not' necessary that the principal Abraking tongueAshouldbe pivoted at a point some-distance from the end 'oftheboXff-ba'ck. A tongueot the'fusual type, pivotednear the est pin`i8suits very'well for acting on alever '50 'l arrangedin its usualposition. I f It can be foreseen lthat a-case mayarl'se, in

yexceptional circumstances, wheny an expelled f shuttle'is'caughtbetween the box-back and theflay sword 3, and when theabutment??- isalreadyinengagement Vwith Vthe breast beam (due to badfitting of the loom). In

order't'o" avoid damagevoi' a member, theStai-l" piece 2810i theboxbackcoinprises'twe memi bers, one of which can slide into the other (likeVAa telescope) the Vsliding action, which is opposed b'ya spring, -onlytaking place viin resiliently; .or in short `it is possible 'to emicsploy any iarrangement ,capable of yielding i tort.`

without: breaking incase of any excessive fstto loomsprovided withal-o'ose reed.

same `ease y'by anyV weft-feeler arrangement whenit hasbe'c'onie'exhaustedI 1n .fact,to

, The mechanism can be adaptedr producejthe release of the mechanism, it{suf- 'V iices to displace a small rod or bar, almostV horizontalandsimilar to the member 24iixed i 1 on the'weft fork, in front of thelever Af veryV small alfort and a' very small displacementisuiiice andthisrenders the control-easy by any .testing device,.generally anycontrol device which transmits `'its :orders 'to such la. small rod orbar. f Forexampldisuch a member can takefthejplaceof thesmall bar 24, ofthe wartime; .it @an also coiaetwnh it,

acting on'the same lever "23 ofthe change shaft 22 jfor unlocking'fitcan a'lsofact on any" other lever arranged elsewhere and duren noA`'lheoperation of the Y'n1echan1sm, instead f oi being controlled bytheweftr fork, :as has'j been described, may ibeicontrolled'with theKA yently for acting upon the princi pal detent 19 in a similar manner tothat which has been described. It is necessary, however, to ensure thatthis new member will be acted upon atevery other beat of the loom bymeans of the safety cam described, as the lever 56 and the roller 54described do on the tail piece of the weft fork. In this way, thechanging of the shuttle may be produced after a certain number of beatsof the loom for example, or by any other predetermined means, by theaidof` mechanism or by hand, without ever vhaving to fear untimelyoperation, which the safety cam prevents.

Iclaim: l

l. Automatic shuttle-changing mechanism for looms operating withoutaltering the speed of the loom, comprising in combination a shuttle boxhaving a back which is adapted to be deflected inwardly and a frontwhich is adapted to be raised, a spring tending to deflect said box backinwardly, a detent maintaining said box back in the normal position,said detent being adapted to be released during a short instant of eachbeat of the loom when the lay is in the forward or beating up position,a fixed abutment adapted to restore said box back to normal position andmeans for releasing` said detentretaining said box back, said meansoperating by a resiliently transmitted impulse whichis every vother beatof the loom,

2. Automatic shuttle-changing mechanism Vfor looms, operating withoutalteringthe speed of the loom, comprising in combina-tion a shuttle boxhaving a bach which is adapted tobe deflected inwardly and a front whichis adapted to be raised, a spring tending to deflect said box backinwardly, a detent maintaining said box back in the normal positionagainst the action of said spring, said detent being adapted to bereleased 'during a short instant of each beat of the loom when the layis inthe f-orward or beating up position, a fixed abut-ment adapted torestoresaid box back to normal position and means for releasing saiddetent retaining said box back, said means comprising a resilientlyoperated memberrsituated on the lay itself and operated in the forwardor beating up position of the loom by .an impulse produced by anabutment controlled by the failing of the weft and adapted to beforcibly diverted from its normal direction of operation at every otherbeat of the loom.

3. Automatic shuttle-changing mechanism for looms operating withoutaltering the speed of the loom, comprising in combination a shuttle boxhaving a back which is adapted 'to be deflected inwardly and a frontwhich isadapted'to be'raised, means controlled'by the box-back forlocking the boxfront when at rest, a spring tending to deflect said`box-backinwardly, a detent maintaining said box-baci; in the normalposition prevented at against the action of said spring, said detent'being adapted to be released during a short instantof each beat of theloom when the lay is inthe Yforward orbeating up position, meanscontrolled by said box-back when deflected for unlocking and raisingsaid boxfront, means for `locking said box-front in the raised position,a fixed abutment adapted to restore said box-back to normal position,means controlled by said box-back when being restored to normal positionfor unloclring said raised box-front and means controlled by the failingof the weft for releasing said detent retaining said box-back.

t. Automatic shuttle-changing mechanism for looms operating withoutaltering the speed of the loom, comprising in combination a shuttle boxhaving a back which is adapted to be defiected inwardly and a frontwhich is adapted to beraised, a spring tending to deflect said box-backinwardly, a -detent maintaining said box-back in the normal positionagainst the action of said spring, said detent being adapted to bereleased during a short instant of each beat of the loom when the lay isin the forward or beating up positiom-means for releasing said detentretaining said box-back, said means operating by a resilientlytransmitted impulse y which is prevented at every other beat of theloom, a fixed abutment adapted to restore said box-back to normalposition, a braking member f-or retaining the ejected shuttle, a detentfor maintaining said braking member in the deviated position whilst theboxbackV is being restored to normal position and means for releasingimmediately said detent of said braking member. Y

Y 5. Automatic shuttle-changing mechanism for loo-ms operating withoutaltering theV speed of the loom, comprising in combination a shuttle boxhaving a back which is adapted to be deflected inwardly and a frontwhich is adapted to be raised, means controlled by the box-back forlocking the box-front when at rest, a spring tending to deflect saidboxback inwardly, a detent maintaining said boxback in the normalposition against the action ofY said spring, said Ydetent being adaptedto be released during a short instant of each beatof-the loom when thelay is in the forward or beating up position, means for releasing saiddetentretaining said box-baclr, said means operating by a resilientlytransmitted impulse produced by the weft fork and prevented at everyother beatof the loom, means controlled by said box-back when deflectedfor unlocking and raising said box-front, means for locking saidbox-front in the raised position, a fixed abutment adapted to restoresaid box-back to normal position, means controlled by said box-back,when being re-y CAD Lex

taining said` braking member in tlie deviated position Whilst tbebo-Xbaolr is 'being restored Vto normal nositioiiaandmeans forreleasing; immediately said detent efsaid bralre ing member. v f

6; Automatic shuttle-changingmechanism for looms operating'"Witlioiitaltering the when at rest, 'a spring tendine' to deflect saidy bon-backinwardly, a detent-niaintaining said bon-baci; in tlie normal `positionagainst tlie action of said spring, said detent sing adapted to bereleased during a sliort yinstant the i'oi'vvard or beating apposition,means for releasi back, said neansoperating by a `resilientlyrtransmitted impulse ivliicli is pi'eventedfrom operating at every otherbeat ot tlie loom, meansy controlled by said boXv-baclrwlien'deiieotedfor unlocking and raisin@l said boi:-

ront, 'means for locking said vboit-front in the raised position, atiiedabutment adapted to restore boX-bajoli" toiiiorinal position,-

means controlled Vsaid bon-back when "being restore-dto normal positionfor unlocking said raised 4boit-front, a braking;v member forv retainingthe ejected shuttle and A.meansopf erated by saidbraling` 'memberorfallovving tbe shuttle driving picker toibo moved baolz' intonorin'alpositioii until after the Charging oianevvsliuttle.VV d ,y

7. Automatic shuttle-changing mechanism ior looms operating Vivitlioiit'altering `tbe speed of the loonneoinprisinp; in coinbin ation a shuttlebox having` a back Wliie'li is adapted to be deliected inwardly and v'afront. :which is adapted to be raised, lmeans controlled by tliebon-back for looliiigtlie bon-'iront Wli'eii at'iest, a spring tendingto deflect said vboY- back inwardly, a idetent maintaining said'box-back in ftlie normalposition agaiiisu tlie action of said soring,said deteiitybeing adapted to be released during short instant of eachbea-t of the loom Wlien tlie'lay'is iii tlie forward or beating' up'position, means for releasing said detent retaining said box-nada saidmeans operating by a resiliently transf mitted impulse Wliioli isprevented from op-l erating at every' otlier beat of tlie loom, meanscontrolled by said b oi'r-biiol;Wlieii deeoted for iinloolriinq andraising,` said boXfiront-,means i'or looking said bon-front in theraisedposi-L tion, a iiXed abutment adapted to restore said box-back to normalpositioinmeans controlled by said boX-baclrwlien being restored tonormal position orimlookiiig saidraisediboxfront, a braking member forretaining the ejected shuttle and a pivoted lever adapted to beroperatedwhen the layv approaches tbe breast beam of the loom vto movebaok the 0said detentretaining said boire f i beat of: tlie loom, means,Controlledfby said siiuttle driving picker 'during vthe charging l a new shuttle.e Y 8. Automatic sbiittlecbanging kmechanism for looms Voperating'yivitlioiit altering vtlie ,speed ofthe loom, comprising iiioombina-Vtion a. shuttle boxliaving a back Wliicliijs adapted to be deflectedinwardly and a iront Wliielfi is adapted `.to be raised, means :conftrolled by tne box-back orlooliing tlieboxe iirontwlien at rest, aspringftending to Ide-v lect said boxfbacl; iniif'ard'lyga detent main#tion, means for releasing said det'ent retaining said box-back, said-means operatin@.byV

a resiliei'itly transmitted impulse which is prevented from Voperatingat every otliei- L"Jo-1`baolL when deflected for unlocking and raisingsaid box-front, means for looking'said box-front in tlie raisedpositioma liXed abutment adapted to restore said box-baclrto normalnosiftion, means controlled by said bo.\ b slr when' being restored tonormal position for unipol-:iny,l s Y'idfraised box-front, a bra-kingmember Vfor retaining ,the ej eoted shuttle and@ a resiliently-nioii'iitedtongue on tbe-boX-baclsv adaptedqto absorb vtlieslioelrof'tlie ejected shuttle andto'guide it into tlieinelined ege@-k ation passage. i 9. Automatic shuttle-changing mechanism fior loomsoperating Without altering tbe/f5 speedoi the loom, comprising incombination A a shuttle box having a back which is adapted yto Abedeflected inwardly and a front Which is adapted tobei'aised, meanscontrolledby tlie.

box-back foi.loeking tlie box-.front When 'at rest a s Yrino' tendini);to deflect said boi'ifbael inwardly a detent niaintaininp' saidboni-back in. tlie nornialpo'sition against the action oi said spring,said'detent being .adaptedto bereleased during a'shoitinstant of eachbeat oiC thelooin ivlientlie lay in the ,for- A Ward or beatingiipposition, means for releas ing said detent retaining said boil-back,said means operating by aresiliently transmitted impulse which is.prevented from operatingat every other beat oit' rtlie. loom, meansoontrolled YbyA said box-bank When Vdeflected for V 'unlocking andraising said box-front, means for locking said box-ifront in tlieraisedpo c tion,a Afined abutment adapted to restore said box-back toY normalposition, ineans controlled by saidboiibaek Wlieiijbeing restored ,Y

to `normal positionior iiiilookingfsaid raised box-front, abrakinginemberioi" retaining j tl'ie ejected shuttle, asupply magazineand means for forcing a new sliuttie ont "ofsaid supplyinagaziiie, saidmeans Comprising a fsivingingmembei so' actuated tha'tj it regulates thespeed oi exit 4of said said supply magazine.`

.Shuttle `rfrom 10. Automatic shuttle-changing mechanism forloomsoperating without altering the speed of the loom, comprising incombination a shuttle box havinga baclr which is adapted to be deflectedinwardly and a front which is adapted to be raised, means controlled bythe box-back for locking the boxfront when at rest, a spring tending todeflect'saidbox-baclr inwardly, a detent maintaining said box-back inthe normal position against the action of said spring, said detent beingadapted to be released during a short instant of each beat of the loomwhen the lay is in the forward or beating up position, means forreleasing said detent retaining said box-back, said means operating by`a resiliently transmitted impulse which is Jreventod from oaeratino' ateverT other beat 'b u t the loom, means controlled by said boxback whendeflected for unlocking and raising said box-front,means for lockingsaid `means for retaining the shuttle whilst waiting for thennextcharging operation and means for retaining the upper shuttles during thecharging operation so as to allow the re-entry into the magazine of anejected shuttle pushed back by the lay of the loom when said shuttle hasbeen ejected at the wrong time.

ll. Automatic shuttle-changing mechanism for looms operatingl withoutaltering the speed of the loom, comprising in combination a shuttleboxhaving a back which is adapted to be deilected inwardly and a frontwhich is adapted tobe raised, means controlled by the box-back forlocking the box-frontwhen at rest, a spring tending to deflect saidbox-back inwardly, a detent maintaining said box-back in thernormalposition against the action of said spring, said detent being adapted tobe released during a short instant of each beat of the loom when the layis in the forward or beating up position`l means controlled by saidbox-baci; when deflected for unlocking and raising said box-front, meansfor locking said box-front in the raised position. a fixed abutmentadapted to restore said box-back to normal position, means controlled bysaid boxbaclr when being restored to norma-l position vfor unlockingsaid raised box-front, means for releasing said detent retaining saidboxbaclr, said means operating by a resiliently transmitted impulseproduced bythe weft fork and prevented at every other beat of the loom,a taking-up regula-tor and means for momentarily suppressing the actionof said regulator.

12. Automatic shuttle-changing inschanism for looms operating Withoutaltering the speed of the loom, comprising in combinat-ion a shuttleboxl having a back which is adapted to be deflected inwardly and a frontwhich is adapted to be raised, means controlled by the box-back forlocking the boxfront when at rest, a spring tending to deflect saidbox-back inwardly, a detent maintaining said box-back in the normalposition against the act-ion of said spring, said detent being adaptedto be released during a short instantof each beat ot' the loom when thelay is in the forward or beating up position, mea-ns for releasinof saiddetent retainine' said boxback, said means comprising a resilientlyoperated member situated on the lay itself and operated in the forwardor beating up posiion of the loom by an impulse produced by an abutmentcontrolled by the failing of the wett, means for stopping momentarilythe action of the taking-up regulator of the loom during several beatsot' the loom, means controlled by said box back when deiiected forunlocking and raising` said box-front, means for locking Said box-frontin the raised position, a fixed abutment adapted to restore saidbox-back to normal position, means controlled by said box-back whenbeing restored to normal position for unlocking said raised sox-front, abraking member for retaining the ejected shuttle, adapted to remaininthe deviated position Whilst the box-back is being` restored to normalposition, a resiliently mounted tongue on the box-back adapted to absorbthe shock of the ejected shuttle and to guide it into the inclinedejection passage, a magazine mounted on the breast beam of the loomComprising means for retaining the shuttle in position until thecharging operation has been effected, and a swinging member adapted toforce a new shuttle out of said supply magazine at regulated speed andmeans for forcibly returning the shuttledriving picker to normalposition after each pick of the loom.

In testimony whereof I have hereunto afxed my signature.

MAURICE CHARLES HENRI OCTAVE LECOCQ.

